Molder&#39;s flask and gate.



No. 723,151. l PATENTED MAR. 17, 1903.` S. GRIFFITH. MOLDERS PLASK AND GATE.

` APPLIOATION FILED JAN. so. 1902. 'No MODEL. 1

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S. GRIFFITH MOLDERS PLASK AND GATE. APPLIUATION FILED JAN. ao, 1902.

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ATTORNEYS PATENTED MAR. 17, 1903.

. full, clear, and exact description, suchas will' UNITED STATES PATENT OFFICE.;

4 srAisrrON- GRIFFITH, or SENECA FALLS, NEWYORK, AssIcnOn-OF ONE- HALF To ZACHARYV TAYLOR, or BROOKLYN, NEW YORK.

MOLDERS FLA-SK ANO GATE.

\ SPECIFICATION forming of Letters Patent No. 723,151, dated March 17, 1903. Application filed January 30, 1902, Serial No. `91.822. (No model.) i

Be itv known that I, SrArrrONl GRIFF1rH,.re siding atSenecaFalls, in the county of Seneca and State `of New York, have invented certain new and useful Improvements in Molders Flasks and Gates, of which the following isa enable others skilled inthe art to which it appertains to make and-use the same.

This invention relates to a molders tiask and gate; and its object is to provide a ask and gate which shall be of simple and cheap.

construction, but very eiiicient in operation. The invention consists in the features of construction and the combinations of elements which will be hereinafter fully set forth, and the novel features thereof pointed out in the claims at the end of this specifica-i.

tion. i

lIn the accompanyingdrawings, Figure lis a top plan view of the drag of a fiask, showing the gate with its patterns in position thereon; Fig. 2 isa vertical sectional view through a liask, showing the drag, gate, cope, and the guides .and pins by whichright-line `movement of the severalA parts is secured during the drawing operation. Fig. 8 is a sidev ele- Vati-on of a askfshowing a modification in the means for guiding the cope relatively to the drag. Fig. 4 is a bottom plan of a different form of gate, the` patterns applied thereto being shown diagrammatically. Fig. 5 is a view showing a modified form of pattern and illustrating the advantages of my construction as applied to irregularshaped patterns., Similar reference characters refer to si milar parts throughout the'several views. It has been heretofore proposed to mount the patterns upon cross-bars,which cross-bars are connected to a rectangular frame resting Various objections have been .found to exist with such a construction, amongwhich may be noted the tendency of the pins to bind `in the guides due to the weight 'ofythe frame carried thereby and the relatively long bears ing-surfaces which must be provided. Moreover, where a frame is interposed between,

in a rabbet in either the cope Or the drag.

Vof the frame in drawing the pattern, and hence an error in the mold and in the iinished casting. The required perfection of fit,

sort, whether due to warping from heat or cold or through other causes, will destroy the fitV of the parts and render the work faulty.'

My construction does away entirely'with the frame and its attendant disadvantages `and accomplishes better results in a different manner, aswill be seen upon more specific reference to the drawings, whereinl designates the drag of a flask, and 2 the Attached to the drag 1 are castings 3,

cope. which carry vertical V-shaped pins 4, having their openingsor concave sides on the inside or next the ask. Guide-.platcs' have upwardly and downwardly extending anges 6 'and 7 to cooperate with these pins. ner ends of the guide-plates extend within the walls of the ask, either the cope or the drag, or both, being cut away to allow the guides to pass between them Without preventing a close 4fit of the cope and drag. A gate 8 carries'patterns 9, suitably secured thereto, and this gate is attached at its ends tothe inwardly-projecting ends of the Vguides 5 by means of screws 10, which pass through-elongated slots ll in the guides, so that an adjustment isprovided whereby the relative position of the gate and guide may be adjusted, if desired, and the right-line movement which is so necessary in drawing the patterns may -.be at all times obtained, yThis adjustment constitutes an important part of my invention. It is found by experience that the metal of which the various parts 'are made is so likely to warp or getout of shape from vari' 'ons causes that where no means are provided" for varying the relationbetween the guides and gate the efficiency of the apparatus soon becomes impaired; To the cope 2 arey attached castings or guides 12, which likewise removed, and it is rammed with sand or other molding material, as desired. 4The dra-gand i. f

ICO

follow-board are then turned over and the.

'ther rapped, if necessary, the gate removed,

it being handled .by taking hold of the projecting guide-plates, the cope replaced', yand the flask; is then ready for pouring. The

' guide-flanges 6 and 7, in connection -with the new casting.

done at the expense of much time and trouble.

guides 5, provide ample beariug-surfacesin connection with the pins 4 to prevent any movement during the drawing except the rectilinear movement directly away from the sand of the drag, which rectilinear movement is so necessary, while at the same time the extent and relative proportions of these bearing-surfaces is not such as to cause the binding which is likely to occur in constructions wherein a long guide-pin, in connection with a heavy frame, fits inside of aguide. Where such binding occurs, it is necessaryv for the operator to give a sudden jerk or pull in order to draw the patterns, which, of course, often resultsin injury to the mold. The results to be obtained, if possible, are a perfect freedom of movement for the 'patterns without there being any possibility of deviation from a right-line movement, and it will be seen that my construction provides effectively for such results. Moreover, my construction is so cheap and simple that it is possible to provide a diierent set of' guides for each gate, so that the whole remains together tobe used when desired. In other constructions it is necessary tol use the same frame an`d"guide or. match plate and guide with different gates, so that the old gate must be removed and a new one inserted for each Obviously, this can only be It is found, moreover, that with the guides and guide-pins constructed as herein set forth the contacting surfaces need not be milled or machine-'Iinished, as is necessary in other.

constructions,-br.t thatin most cases proper results will be secured'by using castings for such pins and guides'directly as they come from the mold. At the most' they need only be burnished slightly. This also lessens the expense of construction.

In the modification shown in Fig. 3 the drag, cope, and gate-carrying guide are the same as in Figs. 1 and 2; but in this construction pin 13, over which guide 5 fits, .is made much shorter. The drag is provided with a second casting 14, which carries a vertically-extending pin 15, cooperating with the guide secured to the cope. This guide comprises a plate 16, secured to the side of the cpe, hay.` ingan outwardly-extending fiangc on which is mounted the guide proper, 17, having an outwardly-extending flange through elongated slots for the screws 18, thereby connecting the two parts adjustably together.

A sliding rib-and-groove connection between the two parts of this guide lmay also be provided, if desired, andas shown in the'illustra-v tion.

It will be seen upon inspection of Fig.,2 that the guide-pin 4, inasmuch as it coperates with both the guide 5 in connection with the gate and guidel12 in connection with the cope, must he long enough to secure proper motion of the cope until it is quite clear of the patterns. This necessitates a relatively longfpin, and the guides must be lifted clear of' such pin before the melder can relax the caution necessary to be observed in order not to shake the drag. In the construction shown 'in Fig. 3, however, inasmuch as pins 13 and 15 for guiding the gate-and cope, respectively; are independent of each other the pin`13 may be madesh'orter than in `the other construction. It it necessary that the guides for the gate should clear their pins as soon as possible in the upward movement, so that the gate may then be moved sidewise and the danger of jarring the mold be obviated. Where the guide is carried uporiian independent pin, as

4in Fig. 3, this pin need only be ofsuch a length that it will steady the gate until it has cleared the sand in the drag. Accordingly, the ad- 'vantages of' this construction Will be obvious.

Moreover, when the patterns are rapped through the medium of the gate-guides it will be seen that with the construction shown in Fig. 2 the vibration Will be transmitted,

through the various metallic partsin contact, both to the gate and cope. Inthe construction in'Fig. 3, however, the rapping of the guides 5 can be transmitted to the cope only th rough the medium of the wood of which the frame of'.the cope is composed, and as Wood is ai poor conductor of such motion and .as,' moreover, it only contacts with the ,guides 5 for a limited space the likelihood of the sand in the cope beiuginjuriously affected by the vibrationv applied to the gate islessened. Itwill e seen that this same advantage applies to the construction wherein the'gate is applied directly to its guides such as I have shown herein distinguished from a construction wherein the gate is connected to a. frame, whether solid or open,

which lies between the cope and drag. Where there is such aninterposed frame, the rapping of the guides or lugs projecting therefrom will transmit vibration throughout the extent of the metal frame and the contained material as well as directly to the patterns where it is desired. This will .be an obvious disadvantage, especially if the frame does not fit truly to the drag and cope at all points. All vibration when transmitted to other parts than to the patterns themselves is a disadvantage. Accordingly, the advantage of a construction wherein the only metallic partscalled an H-gate, Such gate is shown comclaim as new, and desire to .secure by Letters Patent, is-

\ are to be duplicated on the other side `f the,"

for transmissionof motion isdi'ect tothe patterns and the. motion cam-only be trans-4 mitted to thecope anddrag through the wood of which they arecomposed will be obvious. `It will otcourse be understood that the pins 13 and 15 'and the guidesl of Fig. 3I

i fiask, the two guide-pins 15 being preferably arranged .at diagonally opposite corners.

irregular shape. y

'entirely by its guides, and'thus the cope and `dragcan be constructed of such shape as to conform with the outline of the pattern. This In Fig. 4 is shown a modiiiedform. of lgate posed of two parts 19, having a: cross-bar 20. Thepatterns are shown diagrammatcally at 21, the other parts being the same'.

y. .The presentconstruction is',`mo`reo`ver,v particnlarly applicable for makingcastings of The pattern is 'supported does away with inuch"trouble and expense attendantupon theuse of`a construction wherein there is an unyielding metal frame,

fwhich'is so muchm'ore expensive thatV it -is necessarily the principal feature of the con` struction, so that the shape of the ilask must conform -`tosthe shape of such metal `.frame Y`4irrespective of' the shape of the casting. This is illustrated in Fig. 5, wherein is shown the.

3o i v nected directly to guides 5 by means of the irregular pattern 22 for a'pnmp-casting consorews' 10, so thatthe cope and drag may be lnad'e ot any desired yshape without having to be adapted to the shape of other parts. 4 Where in the `claims Ixuse the-word clirectly as defining the connection between the gates and'guides, I mean a connection which dispenses entirely with any supportingframe, as such frame is known in the usual` construction, or with any other interposed member. .Thus a 'direct connection between Aagate and its guides permits of the meeting tion the plates 5 pass4 between the drag and' of the drag and cope withj'a 4flush' joint on all sides and with nothingQinterposed therebetweenY save for the very small space which 'i's` occupied by the guides on opposite sides of 4the ask, where as linthe present construciv `Having described lmy invention, what'I LIn combination, a drag having guide- .by pins, guides suitably mounted on said pinss5 V rectly by said guides. 2. In combination, a drag vhaving-guidev anda pattern-carrying gate s upported dipins, guides suitably mounted on/said pins` and. a. pattern carrying gate supported di.

rectly by-said guidesand adjustable `with relation thereto.

3; -In combination, a cope, a drag provided w'itirguide-pins, guides provided withiianges for coperationwitli said pins and -a 'pattern` carrying `gate supported f 'lrectly by, said y guides, the construction and arrangement//he` `ingsuch that thereis a flush 'joint between ,y

the opposing faces ofI the cope and the drag save for the limited spaces where lsaid guids' 'pass between said cope and drag.

' 4. 'Infa molders .iasln a pattern-carrying gate, 'guides by which said gate isdirectly supported,ia drag, means on said drag and coperating with said guides wherebya rightlline movement ispbtained during the draw ing of the patterns.

' ,5. In a molders flask, in combination, a pattern-carrying gate, guides by which said gate is directly and adjustably supported, a 't drag, and means upon said drag cooperating with said guides whereby a right-line move ment is obtained'during the drawing of the patterns.

6. In combination,apattern-carrying gate and guide members therefor, said patterncarrying gate being supported directly by said guide members.

7. In combination, a pattern-carrying gatel and guide members therefor, said pattern` carrying gate being supported directly by said guide members, and adjustablewith relation thereto. Y

8. The combination, of a bdrag and a' pattern'oarrier having guide members inconnection therewith cooperating with ,gn-ide members on said drag, a cope, and coperating guide members on said cope and drag, independent of saidiirst-,m'entioned guide memy bers.

9. Apattern-carrier comprising a gate 8, to `which the patterns are suitably connected,

Ico,4

and guidesplates 5 directly-supporting the A Vends of said gate. u

10. Apattern-carrier comprising a gate 8, towfhich thepatterns are suitably connected,

and guidelplates 5; directly and adjustably` supporting the ends of said gate.'

11. Inavmoldes ask,in combination', a

pendent guiding means adapted to cooperate I with guides for the cope.

13. Ina molders flask, in combination, a drag-1, having relatively short guide-pins 13 attached thereto, guides 5 adapted to fit thereonand to have patterns suitably connected.

theretQjiIldependent pins` 15 connected `to such draa'ppo 2 'and' guide means on said.

cope coperatingwith said pinsl, s'ubstans tially as and for the purposes setlforth.

In testimonywhlereof I ai-x-my signature inthe presence ot vtwo witnesses.

4 A- STANTON GRIFFITH. vXVitnesses:

O. A. Coous,

WILLIAM H. 'HURLEL 

